function onlyNumber(e) {

    var allowedChars = "0123456789";
    
    if (!e) var e = window.event;
    code = e.keyCode;

    if (e.keyCode) code = e.keyCode;
    else if (e.which) code = e.which;

    var character = String.fromCharCode(code);
    
    //var character = code;
    
    if((code>=96 && code<=105) || (code>=48 && code<=57) || code==13 || code == 9 || code == 8) {    
        return true;
    }

    return false;

}
function onlyCurrency(e) {

    if (!e) var e = window.event;
    code = e.keyCode;

    if (e.keyCode) code = e.keyCode;
    else if (e.which) code = e.which;

    var character = String.fromCharCode(code);

    //if (character.test(/([0-9.])/)) {
    if((code>=96 && code<=105) || (code>=48 && code<=57) || code==13 || code == 9 || code == 8 || code == 110) {
        return true;
    }

    return false;

}